Hi Casalguidi,
The only info I have is on her son's birth certificate which is as follows:
Gladys Amy (am certain that's what it says anyway!) Lambert, domestic housekeeper. Residence 28 Artillery Street, South Colchester. The birth took place at that address on 30th March, 1919 and the child was a boy named Leonard. You're right, father's details are blank!
And Kath, I've had a look on the 1901 census and can't find the Gladys Amy born in Lexden - does that mean she was missed off, or that the child died and it isn't the one I'm looking for? *gets self in a tangle*
Anna xx